Their little girl, born at 10:10 p.m. on Jan. 10 in the couple's Las Vegas home, weighed in a 9 lb., 9 oz. and measured 21.5 inches long. The new bundle of joy makes Kody, 46, the father of 18 children with his four wives -- Robyn, 37, Christine, 43, Meri, 44, and Janelle, 46.

Robyn and Kody were legally married in 2014, after the Brown patriarch divorced his first wife, Meri. They also share a 3-year-old son, Solomon. Kody is "spiritually married" to his three other wives.